- The component of a laboratory instrument which detects the chemical or physical signal indicating the presence or quantity of the substance of interest.- solid-state d. a d. that uses a crystalline scintillating material rather than an ionization chamber to detect or measure radiation.
* * *de·tec·tor di-'tek-tər n one that detects esp a device for detecting the presence of electromagnetic waves or of radioactivity
* * *de·tec·tor (de-tekґtər) a device by which the presence of something, or the existence of a certain condition, is discovered.
Medical dictionary. 2011.